Improvement in oscillatismg engines



UNITED S'rarns Irren.

Partnr M. G. KILGOItE AND WILLIAM EBERHARD, OF WASHINGTON, IOVA.

Specification forming part of Letters Patent N0. ILIII-l?, dated November 22, 1864.

To all 'whom it may concern Be it known that we, M. C. KILGORE and WILLIAM EBERHARD, both of Washington, in the county ot' Iashington and State of Iowa, have invented certain new and useful Improvements in Oscillating Steam-Engines 5 and we do hereby'declare that the following is a full, clear, and exact description of the saine, reference being had to the accompanying drawings, forming part of this specification, in which- Figure I is a central longitudinal vertical section of an engine with our improvements. Fig. 2 is a face view of the valve.

Similar letters of reference indicate corresponding parts in both iigures.

This invention consists in the attachment to the cylinder ot' a rigid arm which is'parallel with the piston-rod, and to which is fitted a bearing or socket attached rigidly to the y head of the piston-rod, in combination with a and smoothness.

To enable others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.

The engine is of what is known as the horizontal oscillating kind, the cylinder being horizontal when the crank is on the centers. A is the bed-plate; I3, the cylinder; C, the crankshaft 5 D, the crank; E, the piston; J, the stutng-box; F, the pistou-rod, andG the head ofthe piston-rod containing the bearing for the crank-wrist a, all ot' known construction.

H is the rigid arm, bolted or otherwise secured to the top ofthe cylinder, and terminating in a straight pin or guide, b, of cylindrical or other parallel form, and parallel with the axis of the piston.

.I is the bearing or socket to which the pin Z; is 1itted,formed upon or rigidly secured to the head G of the piston-rod. In the operation of the engine the socket I works on the pin or guide b, and the lifting of the cylinder is done by the arm H, thereby relieving the piston-rod of the strain and the stuffing-box J of friction and wear, and keeping the piston-l :rod and piston true.

o c is the valve seat provided on the under side of the cylinder of the form of an arc of a cylinder concentric with the trunnions d. In this face there are two ports, f f', leadin ginto the cylinder close to the ends thereof.

K is the stationary valve having its face gg hollowed in the form of the arc of a cylinder to iit the valve-seat c c, and supported upon the bed-plate by screwsttin such manner that it may be adjusted to compensate for the wear of its face and of the valve-seat, and provided with two iuduction-ports, i t', communieating with the main induction-passage L, with which the steam-pipe from the boiler is connected, and with two reduction-ports, e o', communicating with the main eduction-passage M, with which the exhaust-pipe is connected, the eduction-ports being so arranged between the induction-ports that the cylinder-port] may communicate with the induction-port t while the cylinder-portf' communicates with the eduction-port e', as shown in Fig. l, and that the induction-port i may communicate with the cylinder-port f', while the eduction-port e connects with the cylinder-port f. The oscillation of the cylinder causes the induction of the steam to take place through the ports j' and j" alternately, the eduction always taking place through the opposite port.

By changing the passage L to the eductionpassage and the passage M to the inductionpassage the engine may be reversed. This may be done by a suitable valve, as in some other oscillating en gincs, and we cannot claim it as our invention.

IVe are aware that the parts of our invention, separately considered, are old; but

Vhat we claim as new, and desire to secure by Letters Patent, is

The combination of the arm H b, attached to the cylinder, the guide I, attached to head G of the piston-rod, the arc-formed valveseat attached to the under side of the cylinder, and the adjustable arc-formed stationary valve K K, all constructed, arranged, and operating in the manner and for the purposes herein specified.

M. C. KILGORE. IVM. EBERHARD.

Vitnesses J. A.. HENDERsoN, J. VAN Nos'raano. 

